#284F60
Closest named color: Dark Grey Blue (#29465B). oklch(40.6% 0.053 228.4), rgb(40, 79, 96).
Aa
White text reads best on this color (8.83:1).
About this color
#284F60 is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.053 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.028 away. White text reads best on it, at 8.83:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.37:1 |
| White text | 8.83:1 |
Values
| HEX | #284F60 |
| RGB | rgb(40, 79, 96) |
| HSL | hsl(198, 41%, 27%) |
| OKLCH | oklch(40.6% 0.053 228.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #284F60 | 8.83:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #284F60 | 2.37:1 | Fails | Lc 13.9 | Not readable |
| #284F60 text on white | 8.83:1 | AAA | Lc 90.1 | Preferred for body text |
| #284F60 text on black | 2.37:1 | Fails | Lc -12.2 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ADC5D1
oklch(80.9% 0.031 229.3)
-
Step 400
400
#81A7B9
oklch(70.7% 0.049 228.5)
-
Step 500
500
#6091A8
oklch(63.1% 0.063 229.1)
-
Step 600
600
#457B93
oklch(55.5% 0.068 228.6)
-
Step 700
700
#36687D
oklch(49.1% 0.063 227.5)
-
Step 800
800 (this color)
#284F60
oklch(40.6% 0.053 228.4)
-
Step 900
900
#294653
oklch(37.7% 0.041 228.3)
-
Step 950
950
#192931
oklch(27% 0.026 230.6)
#284F60 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #464E61 | 0.038 |
| Deuteranopia (no green cones) | #3E4860 | 0.033 |
| Tritanopia (no blue cones) | #005454 | 0.039 |
| Achromatopsia (no color) | #4A4A4A | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284F60
#284F60
oklch(40.6% 0.053 228.4)
- #614130
#614130
oklch(40.7% 0.052 48.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #284F60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.029
- Charcoal #264653 ΔE 0.032
- Deep Teal #00555A ΔE 0.033
- Dark Teal #014D4E ΔE 0.043
- Petrol #005F6A ΔE 0.050
- Dark Blue Green #005249 ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.057
Use #284F60 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.